.page-faq {
  --faq-grid-line: rgba(107, 79, 46, 0.055);
  --faq-card-top: #FFFDF6;
  --faq-card-bottom: #FFF6DE;
  background:
    linear-gradient(var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-grid-line) 1px, transparent 1px);
  background-size: 22px 22px;
}

.page-faq .faq-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

.page-faq .breadcrumb {
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 13px;
}
.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.page-faq .breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
}
.page-faq .breadcrumb li + li::before {
  content: "/";
  color: var(--c-brown);
  opacity: 0.6;
}
.page-faq .breadcrumb a {
  color: var(--c-brown);
  text-decoration: none;
  padding: 2px 4px;
}
.page-faq .breadcrumb a:hover {
  color: var(--c-ink);
  background: var(--c-highlight);
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--c-ink);
  font-weight: 600;
}

.page-faq .page-header {
  margin: 0 0 34px;
  max-width: 780px;
}
.page-faq .chapter-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 5px 12px;
  background: var(--c-highlight);
  border: 1px dashed var(--c-brown);
  border-radius: var(--radius-full);
  color: var(--c-brown);
  margin-bottom: 14px;
}
.page-faq .page-title {
  font-family: var(--font-head);
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.12;
  font-weight: 900;
  color: var(--c-ink);
  margin: 0 0 14px;
  letter-spacing: 0.02em;
  text-shadow:
    2px 2px 0 var(--c-primary),
    4px 4px 0 rgba(255, 180, 0, 0.35);
}
.page-faq .page-subtitle {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-brown);
  margin: 0;
  padding-left: 14px;
  border-left: 3px solid var(--c-orange);
}

.page-faq .faq-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

.page-faq .faq-toc {
  background: linear-gradient(180deg, var(--faq-card-top), var(--faq-card-bottom));
  border: 2px solid var(--c-ink);
  border-radius: var(--radius-md);
  padding: 18px 16px 16px;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.page-faq .faq-toc::before {
  content: "";
  position: absolute;
  top: -9px;
  left: 20px;
  width: 46px;
  height: 16px;
  background: var(--c-primary);
  border: 2px solid var(--c-ink);
  border-radius: 4px;
  transform: rotate(-2deg);
}
.page-faq .toc-title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--c-ink);
  margin: 10px 0 14px;
  letter-spacing: 0.06em;
}

.page-faq .toc-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-faq .toc-list a {
  display: inline-block;
  padding: 8px 14px;
  background: var(--c-cream);
  border: 1.5px solid var(--c-ink);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 500;
  color: var(--c-ink);
  text-decoration: none;
  line-height: 1.2;
  transition: background 0.2s, box-shadow 0.2s, transform 0.2s;
}
.page-faq .toc-list a:hover {
  background: var(--c-primary);
  box-shadow: 3px 3px 0 var(--c-ink);
  transform: translate(-1px, -1px);
}
.page-faq .toc-list a:focus-visible {
  outline: 3px solid var(--c-orange);
  outline-offset: 2px;
}

.page-faq .toc-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 0 0 12px;
}
.page-faq .toc-meta-item {
  background: var(--c-cream);
  border: 1px solid rgba(107, 79, 46, 0.18);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}
.page-faq .toc-meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-brown);
  margin: 0 0 2px;
}
.page-faq .toc-meta dd {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-ink);
  margin: 0;
}

.page-faq .toc-note {
  font-size: 12px;
  line-height: 1.7;
  color: var(--c-brown);
  background: var(--c-highlight);
  border-left: 3px solid var(--c-primary);
  padding: 10px 12px;
  margin: 0 0 14px;
}
.page-faq .toc-action {
  display: block;
  width: 100%;
  text-align: center;
  box-sizing: border-box;
}

.page-faq .faq-content {
  min-width: 0;
}
.page-faq .faq-section {
  scroll-margin-top: 24px;
}
.page-faq .faq-section + .faq-section {
  margin-top: 40px;
  padding-top: 34px;
  border-top: 2px dashed rgba(107, 79, 46, 0.18);
}

.page-faq .section-title {
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 700;
  color: var(--c-ink);
  margin: 0 0 16px;
  padding: 2px 0 2px 14px;
  border-left: 6px solid var(--c-primary);
}
.page-faq .section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-orange);
  margin-right: 10px;
}

.page-faq .faq-accordion {
  display: grid;
  gap: 14px;
}

.page-faq .faq-accordion details {
  background: linear-gradient(180deg, var(--faq-card-top), var(--faq-card-bottom));
  border: 1.5px solid rgba(45, 42, 38, 0.55);
  border-radius: var(--radius-md);
  position: relative;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.7),
    var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-accordion details:nth-child(4n+1) {
  border-radius: 18px 6px 18px 6px;
  transform: rotate(-0.3deg);
}
.page-faq .faq-accordion details:nth-child(4n+2) {
  border-radius: 6px 18px 6px 18px;
  transform: rotate(0.25deg);
}
.page-faq .faq-accordion details:nth-child(4n+3) {
  border-radius: 18px 18px 6px 6px;
  transform: rotate(-0.15deg);
}
.page-faq .faq-accordion details:nth-child(4n) {
  border-radius: 6px 6px 18px 18px;
  transform: rotate(0.2deg);
}

.page-faq .faq-accordion details:hover {
  transform: translateY(-3px) rotate(0deg);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.7),
    var(--shadow-md);
}
.page-faq .faq-accordion details:focus-within {
  transform: translateY(-2px) rotate(0deg);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.7),
    var(--shadow-md);
}

.page-faq .faq-accordion summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 52px 18px 16px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.45;
  color: var(--c-ink);
}
.page-faq .faq-accordion summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-accordion details[open] summary {
  border-bottom: 1px dashed rgba(107, 79, 46, 0.28);
}
.page-faq .faq-accordion summary:focus-visible {
  outline: 3px solid var(--c-orange);
  outline-offset: -3px;
  border-radius: var(--radius-md);
}
.page-faq .faq-accordion summary::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 400;
  color: var(--c-brown);
  border: 1.5px solid var(--c-brown);
  border-radius: 50%;
  background: transparent;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.page-faq .faq-accordion details[open] summary::after {
  content: "−";
  background: var(--c-primary);
  border-color: var(--c-ink);
  color: var(--c-ink);
}

.page-faq .faq-num {
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary);
  border: 1.5px solid var(--c-ink);
  border-radius: 9px 9px 9px 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-ink);
  box-shadow: 2px 2px 0 rgba(45, 42, 38, 0.12);
}
.page-faq .faq-accordion details:nth-child(even) .faq-num {
  border-radius: 3px 9px 9px 9px;
}

.page-faq .faq-answer {
  padding: 12px 18px 20px 62px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(45, 42, 38, 0.86);
}
.page-faq .faq-answer p {
  margin: 0 0 10px;
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-answer a {
  color: var(--c-ink);
  font-weight: 600;
  text-decoration-thickness: 2px;
  text-decoration-color: var(--c-orange);
  text-underline-offset: 3px;
}
.page-faq .faq-answer a:hover {
  background: var(--c-highlight);
  text-decoration-color: var(--c-ink);
}

.page-faq .faq-path {
  display: inline-block;
  background: var(--c-ink);
  color: var(--c-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  padding: 4px 10px;
  border-radius: 4px;
  margin: 2px 0 8px;
}

.page-faq .faq-figure {
  margin: 14px 0 2px;
  padding: 8px;
  background: var(--c-cream);
  border: 1px dashed rgba(107, 79, 46, 0.5);
  border-radius: var(--radius-sm);
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid rgba(107, 79, 46, 0.18);
}
.page-faq .faq-figure figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-brown);
  padding: 8px 4px 2px;
}

@media (min-width: 900px) {
  .page-faq .faq-inner {
    padding: 32px 24px 80px;
  }
  .page-faq .faq-wrap {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 44px;
  }
  .page-faq .faq-toc {
    position: sticky;
    top: 24px;
    padding: 20px;
  }
  .page-faq .toc-list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }
  .page-faq .toc-list a {
    display: block;
    padding: 9px 14px;
  }
  .page-faq .toc-meta {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .page-faq .toc-meta-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
  }
  .page-faq .section-title {
    font-size: 26px;
  }
  .page-faq .faq-answer {
    font-size: 15px;
  }
}